Jean-Michel Trivi | ac12fb0 | 2012-03-06 08:52:14 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ANDROID_EFFECT_DOWNMIX_H_ |
| 18 | #define ANDROID_EFFECT_DOWNMIX_H_ |
| 19 | |
| 20 | #include <hardware/audio_effect.h> |
| 21 | |
| 22 | #if __cplusplus |
| 23 | extern "C" { |
| 24 | #endif |
| 25 | |
| 26 | #define EFFECT_UIID_DOWNMIX__ { 0x381e49cc, 0xa858, 0x4aa2, 0x87f6, \ |
| 27 | { 0xe8, 0x38, 0x8e, 0x76, 0x01, 0xb2 } } |
| 28 | static const effect_uuid_t EFFECT_UIID_DOWNMIX_ = EFFECT_UIID_DOWNMIX__; |
| 29 | const effect_uuid_t * const EFFECT_UIID_DOWNMIX = &EFFECT_UIID_DOWNMIX_; |
| 30 | |
| 31 | |
| 32 | /* enumerated parameter settings for downmix effect */ |
| 33 | typedef enum { |
| 34 | DOWNMIX_PARAM_TYPE |
| 35 | } downmix_params_t; |
| 36 | |
| 37 | |
| 38 | typedef enum { |
| 39 | DOWNMIX_TYPE_INVALID = -1, |
| 40 | // throw away the extra channels |
| 41 | DOWNMIX_TYPE_STRIP = 0, |
| 42 | // mix the extra channels with FL/FR |
| 43 | DOWNMIX_TYPE_FOLD = 1, |
| 44 | DOWNMIX_TYPE_CNT, |
| 45 | DOWNMIX_TYPE_LAST = DOWNMIX_TYPE_CNT - 1 |
| 46 | } downmix_type_t; |
| 47 | |
| 48 | #if __cplusplus |
| 49 | } // extern "C" |
| 50 | #endif |
| 51 | |
| 52 | |
| 53 | #endif /*ANDROID_EFFECT_DOWNMIX_H_*/ |